GB793727A - Detection of sulfur dioxide - Google Patents
Detection of sulfur dioxideInfo
- Publication number
- GB793727A GB793727A GB3482355A GB3482355A GB793727A GB 793727 A GB793727 A GB 793727A GB 3482355 A GB3482355 A GB 3482355A GB 3482355 A GB3482355 A GB 3482355A GB 793727 A GB793727 A GB 793727A
- Authority
- GB
- United Kingdom
- Prior art keywords
- reagent
- sulphur dioxide
- tdd
- bromine
- nitric acid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 title abstract 10
- 238000001514 detection method Methods 0.000 title abstract 2
- 239000003153 chemical reaction reagent Substances 0.000 abstract 5
- JNRLEMMIVRBKJE-UHFFFAOYSA-N 4,4'-Methylenebis(N,N-dimethylaniline) Chemical compound C1=CC(N(C)C)=CC=C1CC1=CC=C(N(C)C)C=C1 JNRLEMMIVRBKJE-UHFFFAOYSA-N 0.000 abstract 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 4
- 235000010269 sulphur dioxide Nutrition 0.000 abstract 4
- 239000004291 sulphur dioxide Substances 0.000 abstract 4
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 abstract 3
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 abstract 3
- 239000003463 adsorbent Substances 0.000 abstract 3
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 abstract 3
- 229910052794 bromium Inorganic materials 0.000 abstract 3
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 abstract 3
- 229910017604 nitric acid Inorganic materials 0.000 abstract 3
- 239000007787 solid Substances 0.000 abstract 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 abstract 2
- 239000003708 ampul Substances 0.000 abstract 2
- 238000004061 bleaching Methods 0.000 abstract 2
- 239000000969 carrier Substances 0.000 abstract 2
- 239000011521 glass Substances 0.000 abstract 2
- 239000000741 silica gel Substances 0.000 abstract 2
- 229910002027 silica gel Inorganic materials 0.000 abstract 2
- AVXURJPOCDRRFD-UHFFFAOYSA-N Hydroxylamine Chemical compound ON AVXURJPOCDRRFD-UHFFFAOYSA-N 0.000 abstract 1
- 239000005909 Kieselgur Substances 0.000 abstract 1
- 239000011324 bead Substances 0.000 abstract 1
- 239000007795 chemical reaction product Substances 0.000 abstract 1
- 235000011187 glycerol Nutrition 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
- 238000002360 preparation method Methods 0.000 abstract 1
- 239000004576 sand Substances 0.000 abstract 1
- 239000010902 straw Substances 0.000 abstract 1
- 238000003786 synthesis reaction Methods 0.000 abstract 1
- 239000000454 talc Substances 0.000 abstract 1
- 229910052623 talc Inorganic materials 0.000 abstract 1
- 238000012360 testing method Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 210000002268 wool Anatomy 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/22—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using chemical indicators
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Molecular Biology (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Biophysics (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
A colorimetric reagent for sulphur dioxide comprises a chemically inert granular solid carrying the blue reaction product of tetramethyldiaminodiphenylmethane (TDD) and a dilute iodine, bromine, or nitric acid solution. On contact with a gas containing sulphur dioxide, the blue colour of the reagent is bleached. The carrier solid is preferably an adsorbent, e.g. silica gel or diatomaceous earth. The reagent may be prepared by mixing the TDD with the granular solid impregnated with a solution of iodine, bromine, or nitric acid in water, ethanol, or glycerine. In use, the ends of a transparent sealed tube containing the reagent may be opened and air or other gas passed through the tube; if a known volume of gas is passed, the length over which bleaching occurs affords a quantitative measure of the sulphur dioxide. The reagent may be supplied as an ampoule containing silica gel impregnated with the solution of iodine, bromine, or nitric acid and a second ampoule containing a non-adsorbent carrier coated with TDD, suitable non-adsorbent carriers being sand, small glass beads, glass powder and talc; the two carriers are thoroughly mixed before use. The testing method may be used for the detection of leaks in refrigerator coils, for controlling the concentration of sulphur dioxide used in bleaching wool or straw, or in the control of organic syntheses, e.g. the preparation of hydroxylamine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3482355A GB793727A (en) | 1955-12-05 | 1955-12-05 | Detection of sulfur dioxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3482355A GB793727A (en) | 1955-12-05 | 1955-12-05 | Detection of sulfur dioxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB793727A true GB793727A (en) | 1958-04-23 |
Family
ID=10370345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3482355A Expired GB793727A (en) | 1955-12-05 | 1955-12-05 | Detection of sulfur dioxide |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB793727A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2350188A (en) * | 1999-05-21 | 2000-11-22 | Draeger Sicherheitstech Gmbh | Colorimetric test element |
-
1955
- 1955-12-05 GB GB3482355A patent/GB793727A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2350188A (en) * | 1999-05-21 | 2000-11-22 | Draeger Sicherheitstech Gmbh | Colorimetric test element |
| GB2350188B (en) * | 1999-05-21 | 2001-04-04 | Draeger Sicherheitstech Gmbh | Test elements for the colorimetric determination of oxidisable components in gas mixtures |
| US6348355B1 (en) | 1999-05-21 | 2002-02-19 | DRäGER SICHERHEITSTECHNIK GMBH | Testing element for the colorimetric determination of oxidizable components in gas mixtures |
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